Electric-switch lock



s. n. LIVINGSTON.

ELECTRIC SWITCH LOCK.

APPLICATION FILED SEPT-30,1919.

Patented May 4, 1920.

avwe 44 601 Siam . UNITED STATES" PATENT FF-10E.

STANLEY D; LIVINGSTON, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE CON- NECTICUT TELEPHONE & ELECTRIC COMPANY, INCORPORATED, OF MERIDEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRIC-SWITCH LOCK.

' Specification of Letters Patent.

Patented May 4, 1920.

Application filed September 30, 1919. Serial No. 327,422.

To all whom it mag concern Be it known that I, STANLEY D. LIVING- sToN, a citizen of the United States of America, residing at Meriden, Connecticut, have invented a new and useful Electric-Switch Look, of which the following is a specification.

My invention relates particularly to a construction intended for use with ignition and lighting systems.

The main'object is to provide a simple and inexpensive form of construction in which the opening and closing of the circuit is controlled by a key.

Figure 1, is a plan view of a constructlon embodying the improvements of my invention. The key is shown in. full lines in the position it would occupy when fully inserted for closing the circuit and in dotted'lines in the closed circuit position from which the key cannot be withdrawn without open ing the circuit.

Fig. 2, is a horizontal sectional view of the parts in the open circuit position.

Fig. 3, are plan and side views respectively of a movable member of the lock which also serves to close the circuit.

Fig. at, is a front view of the construcv' tion, the key being omitted.

Y adapted to 1% into the recess-17 in the member- 13 when, the parts are in the position F ig. v5, shows theshape of the key.

.Fig'. 6, shows the details of the lock spring. I

The plate 10 which may constitute the face plate, has an opening 11 shaped like the letter H with the upper and lower tongues 12, 1-2.

The movable. member shown in Fig. 3, has a body 13 adapted to move between the adjacent ends of the tongues 12, 12. The flanges 14 are of slightly less height than the sides of the H-shaped opening 11' and are adapted to turn through the slots about an axis, the flanges and the walls of, the slot in the face plate acting as relative bearing faces. For convenience in manufacture, the movable member'may be formed oftime separate parts secured together in any suitable manner as indicated in Fig. 3. 1 i

. The spring 15 secured to the plate 10 is provided with a locking tongue 16 which is shown in Fig. 2 so as to lock the member 13 in position. The key 18 is' adapted'to be inserted into the slot 14 and has .one or more prongs suchas 18 adapted to engage a tip 19 of the sprlng 15 so as to retract the looking tongue 16 from the recess 17 and permit the member 13 to be oscillated. The key is, provided with a slot 20 which allows for the thickness of the. body of the member 13 and with slots 21 to allow for the tongues 12, 12 when the key isswung toward the right. The shank 22 of the key is of course i of proper width to pass between-the adjacent ends of the tongues 12, 12. These tongues it will be: noted are located a little to the right of the center ofthe opening 11' so that room enough is provided on the left a to permit the key to be inserted but so that the notches'21 will still be interlocked with the tongues 12, 12 when the key is swung to theright andit will then be impossiblein the latter case to withdraw the key. The

flange14 may be provided with a shoulder 23 adaptedto co-act with the tongue 16.

when the key is swung to the right to limit the movement.

, When the construction is used in. a switch suitable contacts such as 24 and'24 may be mounted in the chamber 25 of-the housing 26 and adapted'to be forced into contact with each other by an insulating but- .ton 27 on the tip of the swinging member ing with .the -oscillating member and a key -for inserting in said slot retracting said. locking member and turning said osci1lat-.

ing member.

2. 'In a lock, a plate havingan opening with a tongue projecting into the opening" between the two sides thereof, an oscillating -member having a' body fitting. in the opening opposite said tongue and having curved flanges fitting in the sides of said openin a locking member co-actin'g with said osci lating member and a key adapted to be inserted through the flange of said oscillating member and having a tip to release said locking member and having a slot to allow for the swinging ofv said key past said tongue.

3. In a lock, a plate, an oscillating member" pivotally carried thereby and having an opening for a key accessible throu 11 said plate, a. spring adapted to interlock in said allow clearance past saidtongues.

oscillating memberTand having an extension in line with said key opening. 4. In a lock, a plate having anopening with oppositely disposed tongues-in'termediate the sides, an oscillating member pivotally carried by said plate adjacent said tonguesand provided with a key hole, a locking member co-acting with said oscillating member and a key for engaging said locking member, said key'havin'g slots to K 5. In a lock, a plate having anopeni ng with oppositely disposed tongues intermediate the sides, an oscillating member iivotally carried by said plate adjacent said tongues and provided with a key,- hole, a locking member co -acting with, said oscillating member and a keylfor engaging said I locking member, said key having slots toj allow clearance past said -tongues,j said tongues being located nearer to one side of the opening than the other {so as to permit the key to be introduced when the oscillating member; is swung to one extreme but" toprevent the withdrawal of the key when the oscillating member is swung to tlie extremeopposite position. Q 6. In a lock, a plate having openings with I tongues extending'toward each otherfr'om opposite sides of'said opening, an oscillat- 3 ing member having curved flanges guided around saidtongues and having a slot for the reception of a key,{a locking member I co-acting with said oscillating member and .a key adapted to be inserted in said os'cil- =lati'ng' member for releasing said locking. '40

member and swinging the oscillating mem- "ber. J

' T: In a disposed tongues, an oscillating member look, a plate having oppositely having curved flanges o-actingwith said tongues. a'locking membercova'cting with said oscillating member, a key for retracting said locking memberand swinging said oscillating member, a 5 ring member foryieldingly holding said oscillating meinben in one position, a housing for said member "and for said oscillating member, said housing having upper and lower, walls limiting the movement of f'the inner end'of said oscillating m m I q; 8.- In a lock. a'housing, a spring member mounted-therein, a front plate tor said housing. an oscillatingrmember, pivotally carried by said frontplate and havingits' rear end adapted to engage said spring member when, in" one position an havinga key slot acces-' sible at the front'of said oscillating" member, a spring-pressed locking member 00- acting w th said-oscillating member to hold I it in one position, and a key adapted to be inserted in the slot insaid oscillating member for retracting. said locking member and swinging said oscillating member toengage said spring member. r 9. In' a lock, a plate having an opening with a lugproje'cting' into one side thereof,

a member having a body extending thro ugh the center of said opening and having a "flange surrounding oneside of said lug said member havinga key slot intersecting the plane ofrthe, opening, a latch for sai'd.mem-- ber in line with said slot when said member is in one position, the plane of said slotinters ecting said lug when said member is in I a another position.

10. In a lock, a plate having an H shaped opening, a'mem'berpi'voted in said opening and having a key slot whose plane intersects the'plane of said, opening, a latch in line with said key slot when said member is in one position,. and a key tor retracting said latch. 5

' 11. In a lock,

a body memberhaving semicircular flanges. and a key slot' intersecting said flanges, means forpivotally supporting said m'ember,a spring pressed latch for holding said member in one position, said lateh having a portion extending in line with said slot when theparts a're thelatched position. I,

12,- In a lock, a pivoted body member having curved flanges and a slot intersecting said flanges and said body, a spring pressed latch for holding said body'in oneposition,

and a bifurcated key for retracting said.

latch-and having notches in its edges corresponding with said flanges.

v 13. In a lock, an oscillating ii1emberliav- A ing a key slot,.a supporting member for said -'oscillating member" having a key passage, a T

' spring-pressed latch for engaging said'oscillat-ing member to hold it-ifi one position, a key adapted to be inserted in'the slot in said.

oscillating member, said key ,havingla .notch fin its outer endto enable it to clear apart of said oscillating inember and having a notch in one edgeto enableit to clear a part of; said supporting member, s'aid'key being adapted to retract said latch and to swing said oscillating member when said latch is i retracted, and meansco-a'cti'ng with said key to. prevent its withdrawal when said oscillatswung from its latched position.

14'. In'a ing member has be? YSTANLEY sLi'vixes'ron 

